Geophysical signature of a World War I tunnel-like anomaly in the Forni Glacier (Punta Linke, Italian Alps).
In: Journal of Glaciology, Jg. 65 (2019-10-01), Heft 253, S. 798-812
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Zugriff:
Global warming and the associated glacier retreat recently revealed the entrance to an ice–rock tunnel, at an altitude of ~3600 m a.s.l., in the uppermost portion of the Forni Glacier in the Central Italian Alps. The tunnel served as an entrance to an Austro-Hungarian cableway station excavated in the rocks during the Great War just behind the frontline. A comprehensive geophysical survey, based on seismic and ground-penetrating radar profiling, was then undertaken to map other possible World War I (WWI) remains still embedded in the ice. The ice–rock interface was reconstructed over the entire saddle and in the uppermost portion of the glacier. A prominent linear reflector was surprisingly similar to the common response of buried pipes. The reflector orientation, almost longitudinal to the slope, does not seem to be compatible with a glacial conduit or with other natural features. Numerical simulations of a series of possible targets constrained interpretation to a partly water-filled rounded shape cavity. The presence of a preserved WWI tunnel connecting Mount Vioz and Punta Linke could be considered a realistic hypothesis. The Forni glacier could be still considered polythermal and comprised of cold ice without basal sliding in its top portion. [ABSTRACT FROM AUTHOR]
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Geophysical signature of a World War I tunnel-like anomaly in the Forni Glacier (Punta Linke, Italian Alps).
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Autor/in / Beteiligte Person: | Francese, R. G. ; Bondesan, A. ; Giorgi, M. ; Picotti, S. ; Carcione, J. ; Salvatore, M. C. ; Nicolis, F. ; Baroni, C. |
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Zeitschrift: | Journal of Glaciology, Jg. 65 (2019-10-01), Heft 253, S. 798-812 |
Veröffentlichung: | 2019 |
Medientyp: | academicJournal |
ISSN: | 0022-1430 (print) |
DOI: | 10.1017/jog.2019.59 |
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